Horseshoe-calk.



PATENTED JUNE 28, 1904.

M. R. JACKSON.

HORSESHOB GALK.

APPLICATION FILED JAN. 11, 1904.

NO MODEL.

Malay flJacson figaegfor.

e/qlforncys Patented June 28, 1904.

UNITED STATES PATENT OFFICE.

MALERY R. JACKSON, OF TIPTON, IOWA.

HORSESHOEI-CALK.

SPECIFICATION forming part of Letters Patent N0. 763,669, dated June 28,1904.

Application filed January 11, 190 Serial No. 188.541. (No model.)

To all whom it may concern Be it known that I, MALERY R. JAoKsoN, acitizen of the United States, residing at Tipton, in the county of Cedarand State of Iowa, have invented a new and useful Horseshoe-Calk, of

which the following is a specification.

This invention relates to horeshoes of the class having yieldable calks,and has for its object to improve the construction of such devices andproduce an easily-applied attachment whereby the concussions arisingfrom the impact of the horses shoes with the pavement will be absorbedand prevented from being imparted to the feet and legs, improve the kneeaction, cause the horse to involuntarily lengthen his stride, preventoverreaching or forging, and improve the gait generally.

With this and other objects in view, the nature of which will appear asthe invention is better understood, the invention consists in certainnovel features of construction, as hereinafter shown and described, andspecified in the claims.

In the accompanying drawings, forming a part of this specification, andin which corresponding parts are denoted by like reference characters,is shown the preferred form of the embodiment of the invention capableof carrying the same into practical operation, it being understood thatthe invention is not necessarily limited thereto, as various changes asto shape, proportions, and modifications in other minor details may beresorted to without departing from the principle of the invention orsacrificing any of its advantages, and the right is therefore reservedof making all changes and modifications which may fairly fall within thescope of the invention and the claims made therefor.

In the drawings thus employed, Figure 1 is an inverted plan view of ahorseshoe with the improvement applied to one heel thereof, but not atthe other. Fig. 2 is an enlarged sectional detail of the heel portionhaving the present device applied thereto. Fig. 3 is a perspective viewof the calk detached.

The horseshoe 10 is provided with recesses 11 in the lower side of itsheel portions, and attached to the heel portions are hollowcasings 12,each casing having longitudinally-extended flanges 13, punctured for theholding screws or. rivets 14:, by which the casings are secured inposition upon the horseshoe. The casings 12 are each provided with adownwardly-opening aperture 15 opposite the recess 11 and preferably nearone end of the casing. Projecting through the apertures 15 are calks 16,having a shoulder 17 on one side and an elongated arm or bar18 on theother side, the latter extending to the unapertured end of the casingand preferably connected movably therein by a transverse rivet 19. Theinner surface of each of the calks 16 is provided with a recess 20,corresponding to the recess 11 in the shoe, and seated by its ends ineach pair of these recesses is a spring 21, exerting its force tomaintain the calk yieldably in its projected position. The springs arethus supported from lateral displacement by the recesses in which theends are seated and will be of suflicient strength to withstand thestrain and afford the requisite cushioning effect. The inner end of thebar 18 will preferably be enlarged and rounded to completely fill theinterior of the casing, so that the strains will be borne by the body ofthe bar and not by the rivet 19, by which it is connected. 7

The calk member 16 will be of any desired shape and may be either sharpor dull to correspond to the condition of the pavement, and byconnecting the casings to shoes by screws the calks can be very quicklychanged when desired. Thus by furnishing duplicate sets of calks theshoes may be very quickly adapted to all kinds of weather or conditionsof the pavement or roadway.

' Having thus described my invention, what I claim is- 1. A horseshoehaving a casing upon the under side thereof, an arm pivoted within thecasing and having a calk working through the opening in the casing, anda spring toyieldably hold the calk projected through the opening in thecasing.

2. A horseshoe having a casing upon the under side thereof, one end ofthe casing being interiorly rounded, the opposite end portion of thecasing having an opening in the bottom thereof, an arm having one endpivoted within the rounded portion of the casing with said end shaped tohave a Working fit within the rounded portion of the casing to relievestrains from the pivot thereof, a calk carried by the free end of thearm and Work ing through the opening in the casing, and a springinterposed between the arm and the shoe to yieldably hold the calkprojected through the opening in the casing.

3. A calk attachment for horseshoes comprising a casing having flangesfor connection with a horseshoe, one end of the casing being interiorlyrounded and its opposite end having an opening in the bottom thereof, anarm pivoted Within the rounded portion of the easing with its pivotedend shaped to have a working fit within said rounded portion of thecasing, a call; carried by the free end of the arm and working throughthe opening in the easing, and a spring to yieldably hold the calkprojected through the opening in the casing.

4. A horseshoe having hollow casings provided withlongitudinally-extending flanges perforated for rivets or screws and bywhich means the casings are attachable to the horseshoe, said casingseach having an outwardlyopening aperture near one end, calks projectingthrough said apertures and having lateral extensions into theunapertured portions of the casings and enlarged at the terminal to fillthe casing, and springs between the calks and horseshoe, substantiallyas described.

5. A horseshoe having recesses in the rear ends, hollow casings attachedto said horseshoe and having outwardly-opening apertures, calksprojecting through said apertures and having lateral shoulders toprevent Withdrawal from the casings, said calks having recesses oppositethe recesses in the horseshoe, and springs each supported by its ends insaid oppositely-disposed recesses.

In testimony that I claim the foregoing as my own I have hereto afl ixedmy signature in the presence of two witnesses.

MALERY R. JACKSON. Witnesses:

L. J. RowELL, M. M. FRANCE.

